static void Main(string[] args)
{
ResupplyCalculatorService service = new ResupplyCalculatorService();
Console.WriteLine("Downloading starships data from https://swapi.dev/api/starships. Please wait");
service.LoadShips().Wait();
Console.Clear();
bool exit = false;
// We will start reading the distance and ensure that the value inputed is a valid integer.
do
{
Console.WriteLine("Welcome to the starship resupply calculator app.");
Console.WriteLine("To start, please inform the distance in MGLT:");
Console.Write(":> ");
var input = Console.ReadLine();
if (input.ConvertToValidInteger(out long distance))
{
bool exitOrderBy = true;
// We will ask for the ordenation. Will keep running the loop until the user inserts a valid option.
do
{
Console.WriteLine($"Great! We will compute the distance for each of the {service.Ships.Count} starships.");
Console.WriteLine("Would you like to get the results ordered by:");
Console.WriteLine(" 1 - Name ");
Console.WriteLine(" 2 - Number of Stops");
Console.Write(":> ");
var optInput = Console.ReadLine();
if (optInput.ConvertToValidInteger(out long optOrdenation))
{
Ordenation order = (Ordenation)optOrdenation;
if (Enum.IsDefined(typeof(Ordenation), order))
{
var results = service.CalculateResupplyStops(distance, order);
int maxNameLenght = results.Max(x => x.SpaceshipName.Length);
string header = "Name".PadRight(maxNameLenght, ' ') + "|| Total number of stops";
Console.WriteLine("".PadRight(header.Length, '_'));
Console.WriteLine(header);
foreach (var ship in results)
{
Console.WriteLine($"{ship.SpaceshipName.PadRight(maxNameLenght, '.')}:> {(ship.NumberOfStops.HasValue ? ship.NumberOfStops.ToString() : "unknown")}");
}
Console.WriteLine("".PadRight(header.Length, '_'));
Console.ReadKey();
Console.Clear();
}
else
{
Console.WriteLine("Please inform a valid option.");
Console.ReadKey();
Console.Clear();
exitOrderBy = false;
}
}
else
{
Console.WriteLine("Please inform a valid option.");
Console.ReadKey();
Console.Clear();
exitOrderBy = false;
}
} while (!exitOrderBy);
}
else
{
Console.WriteLine("Please insert a valid distance.");
Console.ReadKey();
Console.Clear();
}
} while (!exit);
}
public void AddOrderBy(string field, Ordenation ordenation)
{
orderByQuery = " ORDER BY ";
orderByQuery += field;
orderByQuery += (ordenation == Ordenation.Asc ? " ASC" : "DESC");
}
/// <summary>
/// Compute the number of stops given a distance in MGLT for each starship
/// </summary>
/// <param name="distance">Distance in MGLT</param>
public IEnumerable <ResupplyStopsResult> CalculateResupplyStops(long distance, Ordenation ordenation)
{
Func <ResupplyStopsResult, object> orderBy = x => x.SpaceshipName;
if (ordenation == Ordenation.ByNumberOfStops)
{
orderBy = x => x.NumberOfStops;
}
return(Ships.AsParallel().Select(x => new ResupplyStopsResult()
{
SpaceshipName = x.Name,
NumberOfStops = x.ComputeNumberOfStops(distance)
}).OrderBy(orderBy));
}
